--- a/testing/mozharness/configs/unittests/mac_unittest.py
+++ b/testing/mozharness/configs/unittests/mac_unittest.py
@@ -109,17 +109,19 @@ config = {
             "run_filename": "runtestlist.py",
             "testsdir": "mozmill"
         },
         "reftest": {
             "options": [
                 "--appname=%(binary_path)s",
                 "--utility-path=tests/bin",
                 "--extra-profile-file=tests/bin/plugins",
-                "--symbols-path=%(symbols_path)s"
+                "--symbols-path=%(symbols_path)s",
+                "--log-raw=%(raw_log_file)s",
+                "--log-errorsummary=%(error_summary_file)s",
                 "--cleanup-crashes",
             ],
             "run_filename": "runreftest.py",
             "testsdir": "reftest"
         },
         "xpcshell": {
             "options": [
                 "--symbols-path=%(symbols_path)s",